Why do they always have missing slide plates? It's a conspiracy I tell ya ......
It looks like it has the motor mount boss on the pillar below the hand wheel. If so then you can pic up reproduction hand crank kits for around $15.00 at places like Sew-Classic. Of course they're made in China.
Boxes can be had from your local sewing machine shop .... usually. Mine charge $20.00 to 30.00 per box depending on what it is.
$65.00 ..... hmmmm, no, I don't think so.
JMHO
Joe